{"record":{"id":"f83eadf247f977dc","repo":"HKUDS/nanobot","slug":"invalid-content-format","errorCode":null,"errorMessage":"Invalid content format","messagePattern":"Invalid content format","errorType":"validation","errorClass":"ValueError","httpStatus":400,"severity":"error","filePath":"nanobot/api/server.py","lineNumber":234,"sourceCode":"                )\n                url = _require_json_string(\n                    cast(object, image_url.get(\"url\", \"\")),\n                    \"messages[0].content[].image_url.url\",\n                )\n                if url.startswith(\"data:\"):\n                    saved = _save_base64_data_url(url, media_dir)\n                    if saved:\n                        media_paths.append(saved)\n                elif url:\n                    raise ValueError(\n                        \"Remote image URLs are not supported. \"\n                        \"Use base64 data URLs or upload files via multipart/form-data.\"\n                    )\n        text = \" \".join(text_parts)\n    elif isinstance(user_content, str):\n        text = user_content\n    else:\n        raise ValueError(\"Invalid content format\")\n\n    return text, media_paths\n\n\nasync def _parse_multipart(request: web.Request) -> tuple[str, list[str], str | None, str | None]:\n    \"\"\"Parse multipart/form-data. Returns (text, media_paths, session_id, model).\"\"\"\n    media_dir = get_media_dir(\"api\")\n    reader = await request.multipart()\n    text = \"\"\n    session_id = None\n    model = None\n    media_paths: list[str] = []\n\n    while True:\n        part: Any = await reader.next()\n        if part is None:\n            break\n        if part.name == \"message\":","sourceCodeStart":216,"sourceCodeEnd":252,"githubUrl":"https://github.com/HKUDS/nanobot/blob/42f37dc4c0e409eac7818a82d165c5f2757bc075/nanobot/api/server.py#L216-L252","documentation":"Error \"Invalid content format\" thrown in HKUDS/nanobot.","triggerScenarios":"Thrown at nanobot/api/server.py:234 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"42f37dc4c0e409eac7818a82d165c5f2757bc075","analyzedAt":"2026-08-26T00:18:52.276Z","schemaVersion":2},"datasetVersion":"2026-08-26T04:18:47.238Z"}